26
Setting Internal Jumpers
5.5
Configuring Event Input Jumpers
The Model 1094B has one Event Input function that has two modes: (1) Event Capture, and
(2) 1-PPS Deviation measurement. Events may be recorded from two connection points: (1) the
dedicated event input connector, and (2) either COM1 or COM2. Using the dedicated Event Panel
connector, you can set the event input voltage level to one of three ranges: 5 to 12 Vdc, 24 to 48
Vdc, or 120 to 240 Vdc. Alternately, you may capture RS-232 signals as an event at either COM1
or COM2 (pin 2). Apply only RS-232 signal levels to COM1 or COM2. See Tables 5.5 and 5.6.
Input Connector
Input Signal
Jumper & Position
Event
5 - 12 Vdc
JMP3 = A*
Event
24 - 48 Vdc
JMP3 = B
Event
120 - 240 Vdc
JMP3 = C
Table 5.5: Event Input Voltage Selection
Input Connector
Jumper & Position
COM1
JMP2 = A
COM2
JMP2 = B
Event
JMP2 = C*
Table 5.6: Event Input Connector Selection
5.5.1
Selecting the Event Input Channel and Voltage
1. Select the input channel as the designated BNC Event Input (default), COM1 or COM2 (pin
2); choose jumper position A for COM1, B for COM2, or C for the BNC Event connector
(default).
2. To select a voltage level, move jumper JMP3 to A for 5 to 12 Vdc (default), to B for 24 to
48 Vdc, or to C for 120 to 240 Vdc.
5.5.2
Configuring the Event/1-PPS Function
Configure the Event Input feature by using the setup menus, through the front-panel keypad, or
remotely through COM1 or COM2. To use the setup menus, see Section 7.12. To use either COM1
or COM2, see Section 7.12 using the 1094 Utility, or Section 10.3.5, Event Mode Commands using
a terminal program.
